Create function get_interp #440

	# Github actions CI file
	# Ryan Mulhall 2020
	# CI testing for the FRE-NCtools repo, builds and runs unit tests
	# github.com/noaa-gfdl/fre-nctools-container
	name: FRE-NCtools CI
	on: [push, pull_request]
	jobs:
	CI:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	with_mpi: ['','--with-mpi']
	enable_quad_precision: ['', '--enable-quad-precision']
	container:
	image: noaagfdl/fre-nctools-base:2.0.0-focal
	env:
	MPI: ${{ matrix.with_mpi }}
	QUAD_P: ${{ matrix.enable_quad_precision }}
	steps:
	- name: install autoconf dependency
	run: apt update && apt install autoconf-archive
	- name: Checkout
	uses: actions/checkout@v2
	with:
	submodules: recursive
	- name: Configure
	run: \|
	mkdir build && cd build
	autoreconf -i ../configure.ac
	../configure $MPI $QUAD_P
	- name: Build tools
	run: make -C build
	- name: Run all tests
	if: matrix.with_mpi == ''
	run: make -C build -j check LOG_DRIVER_FLAGS=--comments
	- name: Run most tests (skip the slow ones)
	if: matrix.with_mpi == '--with-mpi'
	env:
	SKIP_TESTS: 4
	run: make -C build -j check LOG_DRIVER_FLAGS=--comments
	- name: Save log file on failure
	uses: actions/upload-artifact@v2.2.1
	if: failure()
	with:
	name: test-suite.log
	path: build/t/test-suite.log

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